55343172 has 12 divisors (see below), whose sum is σ = 129134096. Its totient is φ = 18447720.

The previous prime is 55343149. The next prime is 55343173. The reversal of 55343172 is 27134355.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55343173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2305954 + ... + 2305977.

Almost surely, 2^55343172 is an apocalyptic number.

It is an amenable number.

55343172 is an abundant number, since it is smaller than the sum of its proper divisors (73790924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55343172 is a wasteful number, since it uses less digits than its factorization.

55343172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611938 (or 4611936 counting only the distinct ones).

The product of its digits is 12600, while the sum is 30.

The square root of 55343172 is about 7439.2991605393. The cubic root of 55343172 is about 381.0845562909.

The spelling of 55343172 in words is "fifty-five million, three hundred forty-three thousand, one hundred seventy-two".